是一件

is a ... thing

→ 是
phrase Uncommon #8,252
is a ... thing 件 is a measure word used for things and matters; the thing being described usually follows.
CH: 这是一件很重要的事。
EN: This is a very important matter.

笑是一件严肃的事

Laughter is a serious matter.

— 水瓶座 (2016)

为了赶时间而很快做决定是一件非常不对的事吗?

Is it really wrong to make a quick decision just because you're short on time?

— 惊魂记 (1960)

您跟家人朋友一块在这用餐是一件特别温馨的事情

Dining here with your family and friends is especially heartwarming.

— 后来的我们 (2018)

活着真的是一件很棒的事啊

Being alive really is a wonderful thing.

— 起风了 (2013)

它是一件自杀事件。

It was a suicide.

— 隐藏摄像机 (2005)

纯真是一件美好的事。

Innocence is a beautiful thing.

背叛朋友是一件坏事

Betraying a friend is a bad thing.

— 奥本海默 (2023)

她的花园是一件艺术作品。

Her garden is a work of art.

婚姻是一件很严肃的事情

Marriage is a very serious matter.

— 甜蜜的生活 (1960)

许多人都认为葬礼是一件很偶然的事

Many people believe that funerals are purely accidental events.

— 绝美之城 (2013)

弹吉他是一件很快乐的事

Playing guitar is a lot of fun.

— 海角七号 (2008)